"Ankoku Tengoku" is the 19th single released by ALI PROJECT. It was their first entry in a single release schedule spanning two months, "Hizamazuite Ashi wo Oname" was the last one. The title track was used as opening theme song for the animeKamichama Karin. The single reached #15 on the Oricon weekly charts, and charted for 7 weeks, selling 9,636 copies on it's first week and 17,342 copies overall.